How is the boiler output adjusted?
Thread Content
I have a question for everyone: How is the output of Shuangliang boilers with a capacity of 2.8 MW regulated? In winter, two 2.8 MW boilers are used for heating; after heating stops, only one of these boilers is used to supply hot water for domestic use, with it operating intermittently. I would like to adjust the boiler’s output so that it runs continuously, just as it does in winter. Could anyone tell me how to do this?
It might be the control section; the manufacturer has made settings there. For example, pressure control and so on; just check what is used to control the automatic start and stop of the burner, or for load adjustment.
Check the burner controller; if it uses load regulation, the economic efficiency of controlling the output is poor, whereas proportional regulation makes it very easy to meet the owner’s requirements.
The boiler is controlled using an \"RWF40 proportional controller\" to automatically adjust the intensity of the fire. It’s not clear which parameters in this proportional controller need to be adjusted; last winter, HYS1 was set to –5 degrees and HYS3 to +5 degrees, so that the temperature could be maintained at 67 degrees. In the summer, these two values need to be adjusted: HYS1 should be set to -10 degrees, while HYS3 should be set to +10 degrees. The target temperature is 68 degrees. With this setting, the burner starts operating at 58 degrees; below 68 degrees, the fire burns at a high intensity, and once the temperature reaches 68 degrees, it automatically switches to a low intensity. The boiler then stops automatically when the temperature reaches 78 degrees. Now, I want to adjust it to match the settings used last winter, so that the boiler keeps burning continuously. I’m not sure which parameters need to be adjusted. Does anyone know? Thank you here.
On the condition of ensuring safety, increase HYS3 a bit more and raise the gas load further.
Hot water for daily use represents an intermittent load; it is difficult to manage this type of load using continuous adjustment methods, but it’s not impossible. First, it’s necessary to keep track of water usage over different time periods in order to identify patterns in consumption. Based on these patterns, a buffer tank can be installed (its size should be determined based on the longest possible interval between water uses). At the same time, factors such as temperature drops over time must also be taken into account. In this way, the boiler can operate continuously at a lower load level (or with a reduced water supply), while the sudden spikes in demand are handled by the buffer tank. As for the issues mentioned by those upstairs, they are all minor control problems that are relatively easy to resolve!